野生苋菜光合日变化及与环境因子的相关性研究  

Studies on Diurnal Photosynthetic Dynamics of Edible Amaranth and Its Correlation with Environmental Factors

作　　者：杜社妮[1,2] 白岗栓[1,2] 

机构地区：[1]西北农林科技大学水土保持研究所,陕西杨凌712100 [2]中国科学院水利部水土保持研究所,陕西杨凌712100

出　　处：《北方园艺》2011年第9期16-18,共3页Northern Horticulture

基　　金：国家“十一五”科技支撑计划资助项目(2006BAD09B07)

摘　　要：在自然生长条件下测定了野生苋菜的光合速率和蒸腾速率及环境因子的日变化规律,并分析了光合速率、蒸腾速率与环境因子的相关性。结果表明:光合速率和蒸腾速率的日变化呈"单峰"曲线,光合速率的峰值出现在12:00左右,蒸腾速率的峰值比光合速率的峰值晚2 h,出现在14:00左右。苋菜的Pn与PAR、Ta、Gs呈极显著的正相关(P<0.01),与Ca呈显著的正相关(P<0.05),与RH呈负相关。苋菜的Tr与Ta呈极显著的正相关(P<0.01),与RH呈极显著的负相关(P<0.01),与PAR、Gs、Ca呈显著的正相关(P<0.05)。In nature growing,the diurnal dynamics of photosynthetic rate(Pn) and transpiration rate(Tr) of edible amaranth,and environment factors,and analyzed correlation between photosynthetic rate or transpiration rate in leaves of edible amaranth and environment factors.The results showed that the curves of diurnal variation in Pn and Tr of edible amaranth leaves had one peaks,but there were differences in the time and the value of the peaks occurred in terms of Pn and Tr,the time of the peaks of Pn was at 12:00 o'clock,and peaks of Tr was at 14:00 o'clock.There were extremely remarkable positive correlation between Pn and PAR,Ta and Gs,and remarkable positive correlation between Pn and Ca,negative correlation between Pn and(RH)(P>0.05),and extremely remarkable positive correlation between Tr and Ta,extremely remarkable negative correlation between Tr and RH,and remarkable positive correlation between Tr and PAR,Gs and Ca.

关 键 词：苋菜 光合速率 蒸腾速率 环境因子 相关系数 

分 类 号：S6[农业科学—园艺学]